SOURCE

const data = {
	name: 'all',
	children: [
		{
			name: '图片',
			children: [
				{
					name: 'image1.jpg'
				},
				{
					name: '风景',
					children: [
						{
							name: 'guilin.jpg'
						},
						{
							name: 'hainan.jpg'
						}
					]
				},
				{
					name: 'image2.jpg'
				}
			],
		},
		{
			name: '视频',
			children: [
				{
					name: 'video1.mp4'
				},
				{
					name: 'video2.mp4'
				}
			]
		},
		{
			name: '文档',
			children: [
				{
					name: 'document1.doc'
				},
				{
					name: '小说',
					children: [
						{
							name: 'novel.txt'
						},
						{
							name: 'novel2.txt'
						}
					]
				},
				{
					name: 'document2.doc'
				}
			]
		}
	]
}
const dfs = (tree, ope, filter) => {
	const walkAndCopy = (tree, depth = 1) => {
		if(filter(tree.name)) {
			const copy = {}
			ope(tree.name, depth)
			copy.name = tree.name
			if(tree.children) {
				copy.children = []
				tree.children.forEach((node) => {
					const subTree = walkAndCopy(node, depth + 1)
					subTree && copy.children.push(subTree)
				})
			}		
			return copy
		}
	}
	return walkAndCopy(tree)
}

const copy = dfs(data,(name, depth) => {}, (name) => {
	return name.indexOf('1') === -1
})
document.write(JSON.stringify(copy))